import java.util.Scanner;
public class Erfen{
  public static void main(String args[]){
    Scanner reader=new Scanner(System.in);
    int key=reader.nextInt();
    int a[]={1,2,3,4,5,6,7,8,9,10};
    for(int i=0;i<a.length;i++){
      while(key==a[i]){
        System.out.println("weizhi:"+i);
        break;
      }
    }
    if(key<a[0]||key>a[a.length-1]){
      System.out.println("not found");
    }
  }
}